Rooney has amassed 16 medals in 13 years at Old Trafford, before returning to his former club Everton this summer.
The England striker scoring 253 times also smashed a United goals record set by Sir Bobby Charlton, that had stood for 44 years.
“You never know, if they get someone like Messi or Ronaldo the record might get broken!
“But I think that in football now, players don’t really tend to stay at clubs for that long. The only way I can see it being broken is if someone stays for the same period of time that I did.
“It’s a great legacy to have left behind at United. I have got some great memories of a successful time for the club. It was great for me.
“I loved it there, loved working with the players, but it was the right time for me to move on and I feel I’ve certainly made the right decision,” Rooney said.